diff --git a/app/models/amazon_backup.rb b/app/models/amazon_backup.rb
index 44f16921b..d7835fe70 100644
--- a/app/models/amazon_backup.rb
+++ b/app/models/amazon_backup.rb
@@ -12,6 +12,112 @@ class AmazonBackup < ActiveRecord::Base
     first.update_column(:last_id, new_id)
   end
 
+  def self.restore_from_glacier(min_id, max_id)
+    credentials = Aws::Credentials.new(Danbooru.config.aws_access_key_id, Danbooru.config.aws_secret_access_key)
+    Aws.config.update({
+      region: "us-east-1",
+      credentials: credentials
+    })
+    client = Aws::S3::Client.new
+    bucket = Danbooru.config.aws_s3_bucket_name
+
+    f = lambda do |key|
+      begin
+        client.restore_object(
+          bucket: bucket,
+          key: key,
+          restore_request: {
+            days: 7,
+            glacier_job_parameters: {
+              tier: "Bulk"
+            }
+          }
+        )
+      rescue Aws::S3::Errors::InternalError
+        puts "  internal error...retrying"
+        sleep 30
+        retry
+      rescue Aws::S3::Errors::InvalidObjectState
+        puts "  already restored #{key}"
+      rescue Aws::S3::Errors::NoSuchKey
+        puts "  missing #{key}"
+        file_path = "/var/www/danbooru2/shared/data/#{key}"
+
+        if File.exists?(file_path)
+          base64_md5 = Digest::MD5.base64digest(File.read(file_path))
+          body = open(file_path, "rb")
+          client.put_object(bucket: bucket, key: key, body: body, content_md5: base64_md5, acl: "public-read")
+          puts "  uploaded"
+        end
+      rescue Aws::S3::Errors::RestoreAlreadyInProgress
+        puts "  already restoring #{key}"
+      end
+    end
+
+    Post.where("id >= ? and id <= ?", min_id, max_id).find_each do |post|
+      if post.has_large?
+        puts "large:#{post.id}"
+        key = "sample/" + File.basename(post.large_file_path)
+        f.call(key)
+      end
+
+      if post.has_preview?
+        puts "preview:#{post.id}"
+        key = "preview/" + File.basename(post.preview_file_path)
+        f.call(key)
+      end
+
+      puts "#{post.id}"
+      key = File.basename(post.file_path)
+      f.call(key)
+    end
+  end
+
+  def self.copy_to_standard(min_id, max_id)
+    credentials = Aws::Credentials.new(Danbooru.config.aws_access_key_id, Danbooru.config.aws_secret_access_key)
+    Aws.config.update({
+      region: "us-east-1",
+      credentials: credentials
+    })
+    client = Aws::S3::Client.new
+    bucket = Danbooru.config.aws_s3_bucket_name
+
+    f = lambda do |key|
+      begin
+        client.copy_object(bucket: bucket, key: key, acl: "public-read", storage_class: "STANDARD", copy_source: "/#{bucket}/#{key}", metadata_directive: "COPY")
+        puts "  copied #{key}"
+      rescue Aws::S3::Errors::InternalError
+        puts "  internal error...retrying"
+        sleep 30
+        retry
+      rescue Aws::S3::Errors::InvalidObjectState
+        puts "  invalid state #{key}"
+      rescue Aws::S3::Errors::NoSuchKey
+        puts "  missing #{key}"
+      end
+    end
+
+    Post.where("id >= ? and id <= ?", min_id, max_id).find_each do |post|
+      next unless post.has_preview?
+
+      if post.has_preview?
+        puts "preview:#{post.id}"
+        key = "preview/" + File.basename(post.preview_file_path)
+        f.call(key)
+      end
+
+      if post.has_large?
+        puts "large:#{post.id}"
+        key = "sample/" + File.basename(post.large_file_path)
+        f.call(key)
+      end
+
+      puts "#{post.id}"
+      key = File.basename(post.file_path)
+      f.call(key)
+    end
+  end
+
   def self.execute
     return false unless Danbooru.config.aws_s3_enabled?